Question

What is the maximum amount of phenol concentration found in a foundry?

(a) 3 ppm

(b) 4 ppm

(c) 5 ppm

(d) 6 ppm

Answer 1

Right option is (c) 5 ppm

Best explanation: In foundries, there are many ways by which phenol compounds enter into the working space. High amount of phenol concentration could be hazardous for human health. The maximum amount of phenol concentration found in foundries is 5 ppm.